GB8821168D0 - Optical space switch - Google Patents
Optical space switchInfo
- Publication number
- GB8821168D0 GB8821168D0 GB888821168A GB8821168A GB8821168D0 GB 8821168 D0 GB8821168 D0 GB 8821168D0 GB 888821168 A GB888821168 A GB 888821168A GB 8821168 A GB8821168 A GB 8821168A GB 8821168 D0 GB8821168 D0 GB 8821168D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical space
- space switch
- switch
- optical
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/31—Digital deflection, i.e. optical switching
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878721472A GB8721472D0 (en) | 1987-09-11 | 1987-09-11 | Optical distributor |
GB888804202A GB8804202D0 (en) | 1988-02-23 | 1988-02-23 | Optical space switch |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8821168D0 true GB8821168D0 (en) | 1988-10-12 |
GB2209843A GB2209843A (en) | 1989-05-24 |
GB2209843B GB2209843B (en) | 1991-09-11 |
Family
ID=26292719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8821168A Expired - Fee Related GB2209843B (en) | 1987-09-11 | 1988-09-09 | An optical space switch |
Country Status (8)
Country | Link |
---|---|
US (1) | US5013140A (en) |
EP (1) | EP0307244A1 (en) |
JP (1) | JPH02501415A (en) |
AU (1) | AU604374B2 (en) |
CA (1) | CA1310528C (en) |
GB (1) | GB2209843B (en) |
HK (1) | HK120996A (en) |
WO (1) | WO1989002614A1 (en) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8816278D0 (en) * | 1988-07-08 | 1988-08-10 | British Telecomm | Optical space switch |
DE69013130T2 (en) * | 1989-12-28 | 1995-03-09 | Fujitsu Ltd | Optical spatial switch and network with such optical spatial switches. |
FR2660448B1 (en) * | 1990-04-03 | 1992-06-05 | Thomson Csf | DEVICE FOR PROJECTING IMAGES. |
US5126869A (en) * | 1990-12-03 | 1992-06-30 | Raytheon Company | Two-dimensional, phased-array optical beam steerer |
US5317445A (en) * | 1992-12-16 | 1994-05-31 | General Electric Company | Optical device with spatial light modulators for switching polarized light |
JPH0746633A (en) | 1993-02-23 | 1995-02-14 | Fujitsu Ltd | Polarization control type spatical optical switch |
US5363228A (en) * | 1993-03-05 | 1994-11-08 | General Electric Company | Optical device with spatial light modulators for switching arbitrarily polarized light |
BE1007172A3 (en) * | 1993-05-19 | 1995-04-11 | Identity E E S V | Measuring device for optic fibre sensors and optic multiplexer/ de-multiplexer device used in that |
US6243055B1 (en) | 1994-10-25 | 2001-06-05 | James L. Fergason | Optical display system and method with optical shifting of pixel position including conversion of pixel layout to form delta to stripe pattern by time base multiplexing |
US5715029A (en) * | 1994-10-25 | 1998-02-03 | Fergason; James L. | Optical dithering system using birefringence for optical displays and method |
US5572341A (en) * | 1994-10-25 | 1996-11-05 | Fergason; James L. | Electro-optical dithering system using birefringence for optical displays and method |
US5537256A (en) * | 1994-10-25 | 1996-07-16 | Fergason; James L. | Electronic dithering system using birefrigence for optical displays and method |
US6184969B1 (en) * | 1994-10-25 | 2001-02-06 | James L. Fergason | Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement |
US5757547A (en) * | 1995-04-24 | 1998-05-26 | Polycom, Inc. | High efficiency homogeneous polarization converter |
US5912748A (en) * | 1996-07-23 | 1999-06-15 | Chorum Technologies Inc. | Switchable wavelength router |
US6005697A (en) * | 1996-07-23 | 1999-12-21 | Macro-Vision Communications, L.L.C. | Multi-wavelength cross-connect optical network |
US5867291A (en) * | 1996-10-29 | 1999-02-02 | Chorum Technologies Inc. | Programmable wavelength router |
US5694233A (en) * | 1996-07-23 | 1997-12-02 | Macro-Vision Communications, Llc | Switchable wavelength router |
US5724165A (en) * | 1996-07-23 | 1998-03-03 | Macro-Vision Communications, L.L.C. | Fault-tolerant optical routing switch |
US6847786B2 (en) | 1996-10-29 | 2005-01-25 | Ec-Optics Technology, Inc. | Compact wavelength filter using optical birefringence and reflective elements |
US6097518A (en) * | 1996-10-29 | 2000-08-01 | Chorum Technologies Inc. | N x M optical wavelength routing switch |
US6285478B1 (en) | 1998-03-26 | 2001-09-04 | Chorum Technologies Lp | Programmable optical add/drop device |
US6208442B1 (en) | 1998-03-26 | 2001-03-27 | Chorum Technologies, Inc. | Programmable optical multiplexer |
US6115155A (en) | 1996-10-29 | 2000-09-05 | Chorum Technologies Inc. | System for dealing with faults in an optical link |
US6166838A (en) | 1997-03-24 | 2000-12-26 | Chorum Technologies, Inc. | Optical add/drop wavelength switch |
US6163393A (en) | 1996-10-29 | 2000-12-19 | Chorum Technologies Inc. | Method and apparatus for wavelength multipexing/demultiplexing |
US6545783B1 (en) | 1996-10-29 | 2003-04-08 | Chorum Technologies Lp | Optical wavelength add/drop multiplexer |
WO1998035251A1 (en) * | 1997-02-07 | 1998-08-13 | Tellium, Inc. | Dual liquid-crystal wavelength-selective optical switch |
US5946116A (en) * | 1997-04-02 | 1999-08-31 | Wu; Kuang-Yi | 1 X N digitally programmable optical routing switch |
US6275312B1 (en) | 1997-04-02 | 2001-08-14 | Chorum Technologies Lp | Optical routing switch |
US6049404A (en) * | 1997-04-02 | 2000-04-11 | Macro-Vision Communications Inc. | N+M digitally programmable optical routing switch |
WO1999008403A1 (en) * | 1997-08-08 | 1999-02-18 | Chorum Technologies, Inc. | Multi-wavelength cross-connect optical network |
US6134358A (en) | 1998-08-27 | 2000-10-17 | Chorum Technologies Inc. | N x N switch array with reduced components |
US6519060B1 (en) | 1999-06-04 | 2003-02-11 | Chorum Technologies Lp | Synchronous optical network in frequency domain |
US6735016B1 (en) | 1999-09-15 | 2004-05-11 | Spectraswitch, Inc. | Electro-optically controllable polarization insensitive optical device |
US6594063B1 (en) | 1999-09-15 | 2003-07-15 | Spectraswitch, Inc. | Birefringent optical device |
US7116370B1 (en) | 2000-03-31 | 2006-10-03 | Sharp Laboratories Of Ameria, Inc. | Image processing system optical shifting mechanism |
WO2002001773A2 (en) * | 2000-06-23 | 2002-01-03 | Cirvine Corporation | Channel multiplexer and demultiplexer for optical communications |
US6792175B2 (en) | 2000-11-30 | 2004-09-14 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | Optical crossbar switch |
US6809863B2 (en) | 2001-06-07 | 2004-10-26 | Cirvine Corporation | Low dispersion filters |
US6639707B2 (en) | 2001-06-25 | 2003-10-28 | Cirvine Corporation | Tandem interleaver |
US6900938B2 (en) | 2001-06-25 | 2005-05-31 | Bin Zhao | Low dispersion interleaver |
US7064740B2 (en) * | 2001-11-09 | 2006-06-20 | Sharp Laboratories Of America, Inc. | Backlit display with improved dynamic range |
JP3703433B2 (en) * | 2002-01-08 | 2005-10-05 | キヤノン株式会社 | Optical scanning apparatus and image forming apparatus |
US20030175030A1 (en) * | 2002-03-18 | 2003-09-18 | Shuqiang Chen | Re-configurable optical add/drop multiplexer module and method |
US20060007386A1 (en) * | 2003-02-21 | 2006-01-12 | Extellus Usa | Flat top tunable filter with integrated detector |
US6943768B2 (en) * | 2003-02-21 | 2005-09-13 | Xtellus Inc. | Thermal control system for liquid crystal cell |
US7355671B2 (en) * | 2003-02-21 | 2008-04-08 | Xtellus Inc. | Fabrication method for liquid crystal cell |
US7352428B2 (en) * | 2003-02-21 | 2008-04-01 | Xtellus Inc. | Liquid crystal cell platform |
US7009680B2 (en) * | 2003-06-02 | 2006-03-07 | Xtellus Inc. | Narrow band tunable filter with integrated detector |
US20110043742A1 (en) * | 2003-02-21 | 2011-02-24 | Cavanaugh Shanti A | Contamination prevention in liquid crystal cells |
US8243004B2 (en) | 2003-03-10 | 2012-08-14 | Fergason Patent Properties, Llc | Apparatus and method for preparing, storing, transmitting and displaying images |
WO2005052673A2 (en) | 2003-11-21 | 2005-06-09 | Sharp Laboratories Of America, Inc. | Liquid crystal display with adaptive color |
US7164284B2 (en) * | 2003-12-18 | 2007-01-16 | Sharp Laboratories Of America, Inc. | Dynamic gamma for a liquid crystal display |
US20050248553A1 (en) * | 2004-05-04 | 2005-11-10 | Sharp Laboratories Of America, Inc. | Adaptive flicker and motion blur control |
US7532192B2 (en) * | 2004-05-04 | 2009-05-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with filtered black point |
US7777714B2 (en) * | 2004-05-04 | 2010-08-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with adaptive width |
US8395577B2 (en) * | 2004-05-04 | 2013-03-12 | Sharp Laboratories Of America, Inc. | Liquid crystal display with illumination control |
US7505018B2 (en) * | 2004-05-04 | 2009-03-17 | Sharp Laboratories Of America, Inc. | Liquid crystal display with reduced black level insertion |
US7612757B2 (en) * | 2004-05-04 | 2009-11-03 | Sharp Laboratories Of America, Inc. | Liquid crystal display with modulated black point |
US7872631B2 (en) * | 2004-05-04 | 2011-01-18 | Sharp Laboratories Of America, Inc. | Liquid crystal display with temporal black point |
US7023451B2 (en) * | 2004-06-14 | 2006-04-04 | Sharp Laboratories Of America, Inc. | System for reducing crosstalk |
US7556836B2 (en) * | 2004-09-03 | 2009-07-07 | Solae, Llc | High protein snack product |
US7898519B2 (en) * | 2005-02-17 | 2011-03-01 | Sharp Laboratories Of America, Inc. | Method for overdriving a backlit display |
US8050511B2 (en) * | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
US7525528B2 (en) * | 2004-11-16 | 2009-04-28 | Sharp Laboratories Of America, Inc. | Technique that preserves specular highlights |
US8050512B2 (en) | 2004-11-16 | 2011-11-01 | Sharp Laboratories Of America, Inc. | High dynamic range images from low dynamic range images |
US9143657B2 (en) * | 2006-01-24 | 2015-09-22 | Sharp Laboratories Of America, Inc. | Color enhancement technique using skin color detection |
US8121401B2 (en) * | 2006-01-24 | 2012-02-21 | Sharp Labortories of America, Inc. | Method for reducing enhancement of artifacts and noise in image color enhancement |
US8941580B2 (en) * | 2006-11-30 | 2015-01-27 | Sharp Laboratories Of America, Inc. | Liquid crystal display with area adaptive backlight |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2009956A (en) * | 1933-03-22 | 1935-07-30 | Dow Chemical Co | Extracting iodine from natural brines |
DE1285531B (en) * | 1962-11-26 | 1968-12-19 | Western Electric Co | Electro-optical scanning arrangement |
US3435447A (en) * | 1965-03-01 | 1969-03-25 | Ibm | Light deflecting mechanisms |
US3513323A (en) * | 1965-12-13 | 1970-05-19 | Ibm | Light beam deflection system |
US3501640A (en) * | 1967-01-13 | 1970-03-17 | Ibm | Optical communication system |
US3520590A (en) * | 1967-02-01 | 1970-07-14 | Texas Instruments Inc | Digital light deflector |
US3540795A (en) * | 1969-01-15 | 1970-11-17 | Ibm | Achromatic compensation apparatus using polarization rotation and birefringent elements |
US3667828A (en) * | 1969-06-30 | 1972-06-06 | Hitachi Ltd | Digital light deflector |
US3658409A (en) * | 1969-07-11 | 1972-04-25 | Hitachi Ltd | Digital light deflector |
US3719414A (en) * | 1970-08-28 | 1973-03-06 | Westinghouse Electric Corp | Polarization independent light modulation means using birefringent crystals |
US4129357A (en) * | 1977-08-11 | 1978-12-12 | Nasa | Partial polarizer filter |
FR2411426A1 (en) * | 1977-12-09 | 1979-07-06 | Thomson Csf | ELECTRICALLY CONTROLLED OPTICAL BIFURCATION AND ITS APPLICATION TO FIBER OPTIC TRANSMISSION DEVICES |
US4410238A (en) * | 1981-09-03 | 1983-10-18 | Hewlett-Packard Company | Optical switch attenuator |
NL8104122A (en) * | 1981-09-07 | 1983-04-05 | Philips Nv | OPTICAL SWITCH. |
US4478494A (en) * | 1981-11-19 | 1984-10-23 | Sperry Corporation | Optical bypass switch |
US4461543A (en) * | 1982-03-26 | 1984-07-24 | Sperry Corporation | Electro optic switch |
JPH0620316B2 (en) * | 1982-05-17 | 1994-03-16 | 株式会社日立製作所 | Imaging optical system |
US4575193A (en) * | 1984-04-06 | 1986-03-11 | Eastman Kodak Company | Optical spatial frequency filter |
JPS61151612A (en) * | 1984-12-26 | 1986-07-10 | Mitsubishi Electric Corp | Single pole double throw optical switch |
JPS61285430A (en) * | 1985-06-12 | 1986-12-16 | Yamaichi Electric Mfg Co Ltd | Optical path switching mechanism |
GB8713043D0 (en) * | 1987-06-03 | 1987-07-08 | British Telecomm | Optical switch |
-
1988
- 1988-09-09 EP EP88308381A patent/EP0307244A1/en not_active Withdrawn
- 1988-09-09 US US07/348,576 patent/US5013140A/en not_active Expired - Fee Related
- 1988-09-09 GB GB8821168A patent/GB2209843B/en not_active Expired - Fee Related
- 1988-09-09 WO PCT/GB1988/000745 patent/WO1989002614A1/en unknown
- 1988-09-09 JP JP63507246A patent/JPH02501415A/en active Pending
- 1988-09-09 AU AU23811/88A patent/AU604374B2/en not_active Ceased
- 1988-09-12 CA CA000577156A patent/CA1310528C/en not_active Expired - Fee Related
-
1996
- 1996-07-11 HK HK120996A patent/HK120996A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH02501415A (en) | 1990-05-17 |
AU604374B2 (en) | 1990-12-13 |
WO1989002614A1 (en) | 1989-03-23 |
CA1310528C (en) | 1992-11-24 |
HK120996A (en) | 1996-07-19 |
GB2209843B (en) | 1991-09-11 |
GB2209843A (en) | 1989-05-24 |
US5013140A (en) | 1991-05-07 |
AU2381188A (en) | 1989-04-17 |
EP0307244A1 (en) | 1989-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20020909 |